4E1 PDH Multiplexer | 19 Inch 1U Type

This device provides 4 E1 interfaces and a standard 2-wire telephone as engineering order-wire (optional). It has a comprehensive alarm function, stable and reliable operation, low power consumption, high integration, and small size.

● The device features a modular wide dynamic range optical detector.

● Uses standard 2 wire telephone(non-telephone handles) set as engineering order-wire hotline (optional).

● E1 interface complies with G.703, and adopts fully digital clock recovery and smooth phase-locked loop technology.

● This device is capable of detecting power outage or fiber break at the opposite end when the optical signal is lost, and indicating the alarm through LED lights.

● It can display the working status of the remote device at the local end.

● This device provides a remote interface loopback function for line maintenance.

● The transmission distance is up to 2-120Km without a relay;

● AC 220V, DC-48V, DC+24V can be optional;

● Fiber

Fiber Port: 1

Fiber Core: Single/Dual fiber core

Connector: FC/SC/ST/LC (SFP)

Wavelength: 850nm/1310nm (multimode); 1310nm/1550nm (single-mode).

Maximum transmission distance without relay: 20-120 kilometers.

Typical output power:

Single-mode 1310/1550nm: ≥-9 dBm

Multimode 850nm: -18 dBm.

Multimode 1310nm: -25 dBm.

Receiver sensitivity range: -28dBm ~ -40dBm

● E1 Interface

Interface Standard: Comply with protocol G.703;

Rate: 2048Kbps±50ppm;

Line Code: HDB3;

E1 Impedance: 75Ω (unbalance), 120Ω (balance);

Jitter Performance: Comply with ITU-T G.742 and G.823 recommendations

Input Attenuation: 0~6dBm

● Working Environment

Working temperature: -10°C ~ 50°C

Working Humidity: 5%~95 % (no condensation)

Storage temperature: -40°C ~ 80°C

Storage Humidity: 5%~95 % (no condensation)